This research focuses on observing, describing, and evaluating science-related content transmitted on TikTok. In addition, a study of perceptions is conducted to understand the opinions of members within this community regarding these publications. The objective is to determine the areas and disciplines of science that find a place within this ecosystem and the extent to which they are consumed. Using an inductive approach, a mixed methodology was developed, comprising an analysis sheet and a self-designed questionnaire. A total of 1,612 videos were analysed, and 497 individuals were surveyed. The results demonstrate that content related to Natural and Exact Sciences predominates in this ecosystem, followed by videos on Social Sciences, Health Sciences, Arts and Humanities, and Engineering and Architecture. Significant gender differences were detected regarding scientific production, with Physics, Biology, Chemistry, and Computer science having more dissemination among men. Women excel in Biology, Physics, Chemistry and Astronomy. The study of perceptions reveals that a relevant percentage of respondents are interested in scientific and technological subjects and consider TikTok as a useful tool for acquiring knowledge. However, doubts persist in respect of its reliability. In conclusion, TikTok has the potential to become a socially and culturally impactful learning tool. However, it remains an entertainment-focused platform where content lacking epistemological value emerges.